High buildings rise from the flat ground.

高楼万丈平地起。

youdao

Uphill running forces you to drive your arms harder than you do when running on flat ground, so you'll improve your upper body strength.

使您的上身有劲：跑坡道迫使您摆臂比跑平地时更加用力，因此，您的上身力量可以提高。

youdao

Hills. If you run or bike or walk for cardio, you'll want to incorporate hills (after the first month or two of doing it at an easy pace on flat ground).

如果你通过跑步，骑车或者走路来锻炼心脏，那么结合斜坡，效果更好(通常在平地上锻炼一两个月以后进行。)

youdao

People driving during a tornado are told to find low ground and lay flat,facedown, with their hands covering their head.

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It sits flat on the ground with the bottom open to the earth.

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Men lay flat on the ground. They prayed for the shelling to stop.

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He resumed throwing Feb. 25 from flat ground and completed a long toss session from 130 feet on Thursday.

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The trip through the cities of Illinois, the flat ground of Indiana, and the northern part of Ohio was uneventful.

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We didn't clock our speeds, but the bike can supposedly top about 15 miles per hour on flat ground with the pedal-assist on, and that sounds about right to us.

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